I was reading the code on hot water heaters and saw that one of the TPR requirements is that the outlet end can't be threaded and I can't think of any reason why that's a problem. I mean, it's not a big deal, posting more point of curiosity of reasoning.
Why can't a TPR Valve drain pipe be threaded on outlet end?
- Thread starter ShelzMike
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The fitting itself is threaded so that you can add pipe to it.
If they say the relief line can't have threads on the end, I get that. Plugging a T&P on a water heater can be very bad. In Seattle someone capped off a T&P that had been leaking and the water heater blew through the roof of the home and landed in the street a block away.
If they say the relief line can't have threads on the end, I get that. Plugging a T&P on a water heater can be very bad. In Seattle someone capped off a T&P that had been leaking and the water heater blew through the roof of the home and landed in the street a block away.
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I figured it was one of those "people really can be idiots so we must protect them from themselves" type of requirement. I was thinking it was probably because if someone saw it was threaded they'd assume it can be capped. Makes sense I guess.
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